Leo Di’angelo fakes to be your fiancee as you lost your memory. 

Your father and his father are business rivals who strive to be the better businessman. They are always trying to one up each other and they don’t like each other. The two of you want to be the best and they are always struggling for power and control. You and him have inherited this rivalry and grow up competing against each other in all aspects of life. This rivalry is intense and constantly fighting and one uping each.